Cellular respiration mainly releases energy by breaking down which substance?
Answer and explanation
Correct answer: Glucose
Cellular respiration is the controlled oxidation of food inside cells. In the usual school-level description, glucose is broken down in the presence of oxygen to release usable energy, with carbon dioxide and water as products; without oxygen, partial breakdown can occur. Thus option A is correct. Sand, iron and glass are not cellular respiratory fuels and cannot replace glucose in this process.
Frequently asked questions
What is the correct answer to this question?
Glucose
Why is this the correct answer?
Cellular respiration is the controlled oxidation of food inside cells. In the usual school-level description, glucose is broken down in the presence of oxygen to release usable energy, with carbon dioxide and water as products; without oxygen, partial breakdown can occur. Thus option A is correct. Sand, iron and glass are not cellular respiratory fuels and cannot replace glucose in this process.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Life Processes.
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